최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0576697 (2009-10-09) |
등록번호 | US-8281861 (2012-10-09) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 49 인용 특허 : 729 |
A method of heating a subsurface formation includes introducing a molten salt into a first passageway of a conduit-in-conduit heater at a first location. The molten salt is passed through the conduit-in-conduit heater in the formation to a second location. Heat transfers from the molten salt to a tr
A method of heating a subsurface formation includes introducing a molten salt into a first passageway of a conduit-in-conduit heater at a first location. The molten salt is passed through the conduit-in-conduit heater in the formation to a second location. Heat transfers from the molten salt to a treatment area during passage of the molten salt through the conduit-in-conduit heater. The molten salt is removed from the conduit-in-conduit heater at a second location spaced away from the first location.
1. A method of heating a subsurface formation, comprising: introducing a secondary heat transfer fluid into a first passageway of a heater positioned in the subsurface formation to preheat the heater;introducing a primary heat transfer fluid into a second passageway of the heater; andeliminating or
1. A method of heating a subsurface formation, comprising: introducing a secondary heat transfer fluid into a first passageway of a heater positioned in the subsurface formation to preheat the heater;introducing a primary heat transfer fluid into a second passageway of the heater; andeliminating or reducing flow of the secondary heat transfer fluid into the first passageway after a temperature of the heater is sufficient to ensure flowability of the primary heat transfer fluid. 2. The method of claim 1, further comprising introducing a third heat transfer fluid into the second passageway of the heater prior to introducing the primary heat transfer fluid to preheat the second passageway, and removing at least a portion of the third heat transfer fluid from the second passageway. 3. The method of claim 2, wherein removing at least a portion of the third heat transfer fluid comprises displacing the third heat transfer fluid with the primary heat transfer fluid. 4. The method of claim 2, wherein the third heat transfer fluid comprises an aqueous solution of the primary heat transfer fluid. 5. The method of claim 1, wherein the primary heat transfer fluid comprises molten salt. 6. The method of claim 1, wherein the secondary heat transfer fluid is selected from a group consisting of: carbon dioxide, exhaust gas, natural or synthetic oil, molten salts, high pressure liquid water, steam, molten metal alloys, and mixtures thereof. 7. The method of claim 1, further comprising heating the secondary heat transfer fluid to a temperature up to about the boiling point of the secondary heat transfer fluid. 8. The method of claim 1, further comprising drawing a vacuum on the first passageway after the temperature of the heater is sufficient to ensure flowability of the primary heat transfer fluid. 9. The method of claim 1, further comprising circulating the primary heat transfer fluid through the second passageway to raise the temperature of a heat treatment area adjacent to the heater. 10. The method of claim 9, further comprising providing heat to the heat treatment area from the second passageway such that at least some hydrocarbons in the subsurface formation are mobilized. 11. The method of claim 1, wherein the heater is positioned in a wellbore in the subsurface formation. 12. A method for heating a subsurface formation, comprising: circulating a first heat transfer fluid through a first passageway in a heater positioned in the subsurface formation to raise a temperature of the heater to a temperature that ensures flowability of a second heat transfer fluid in the heater;stopping circulation of the first heat transfer fluid through the heater; andcirculating the second heat transfer fluid through a second passageway in the heater positioned in the subsurface formation to raise the temperature of a heat treatment area adjacent to the heater. 13. The method of claim 12, wherein the heater comprises a conduit. 14. The method of claim 12, wherein the heater comprises a conduit-in-conduit heater. 15. The method of claim 12, wherein the second heat transfer fluid comprises molten salt. 16. The method of claim 12, wherein the first heat transfer fluid is selected from a group consisting of: carbon dioxide, exhaust gas, natural or synthetic oil, molten salts, high pressure liquid water, steam, and molten metal alloys. 17. The method of claim 12, wherein the first heat transfer fluid comprises an aqueous solution of the second heat transfer fluid. 18. The method of claim 12, further comprising heating the first heat transfer fluid to a temperature up to about the boiling point of the first heat transfer fluid. 19. The method of claim 12, further comprising providing heat to the heat treatment area from the heater such that at least some hydrocarbons in the subsurface formation are mobilized. 20. The method of claim 12, wherein the heater is positioned in a wellbore in the subsurface formation. 21. A method for heating a subsurface formation, comprising: circulating a first heat transfer fluid through a heater positioned in the subsurface formation to raise a temperature of the heater to a temperature that ensures flowability of a second heat transfer fluid in the heater, wherein the first heat transfer fluid comprises an aqueous solution of the second heat transfer fluid;stopping circulation of the first heat transfer fluid through the heater; andcirculating the second heat transfer fluid through the heater positioned in the subsurface formation to raise the temperature of a heat treatment area adjacent to the heater. 22. The method of claim 21, further comprising removing water from the first heat transfer fluid to form the second heat transfer fluid. 23. The method of claim 21, wherein the first heat transfer fluid is selected from a group consisting of: carbon dioxide, exhaust gas, natural or synthetic oil, molten salts, high pressure liquid water, steam, and molten metal alloys. 24. The method of claim 21, further comprising providing heat to the heat treatment area from the heater such that at least some hydrocarbons in the subsurface formation are mobilized. 25. The method of claim 21, wherein the heater is positioned in a wellbore in the subsurface formation. 26. A method for heating a subsurface formation, comprising: circulating a first heat transfer fluid through a heater positioned in the subsurface formation to raise a temperature of the heater to a temperature that ensures flowability of a second heat transfer fluid in the heater, wherein the first heat transfer fluid comprises an aqueous solution of the second heat transfer fluid;removing water from the first heat transfer fluid to form the second heat transfer fluid; andcirculating the second heat transfer fluid through the heater positioned in the subsurface formation to raise the temperature of a heat treatment area adjacent to the heater. 27. The method of claim 26, wherein the first heat transfer fluid is selected from a group consisting of: carbon dioxide, exhaust gas, natural or synthetic oil, molten salts, high pressure liquid water, steam, and molten metal alloys. 28. The method of claim 27, further comprising providing heat to the heat treatment area from the heater such that at least some hydrocarbons in the subsurface formation are mobilized. 29. The method of claim 28, wherein the heater is positioned in a wellbore in the subsurface formation.
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